Publication Search

Increased caffeine intake is commonly used by students to cope with academic demands, especially during examinations and the completion of final projects. Excessive caffeine consumption may affected sleep quality and potentially influence nutritional status. This study aimed to determine the correlation between caffeine intake, sleep disturbances, and nutritional status among final – year unsergarduated students at Dr. Soekardjo University. This study used quantitative approach with an observational analytic and cross-sectinal design. A total of 108 students participated in the study. Data were collected using questionnaires and analyzed using the Spearman Rank correlations test. The findings indicated that the most of respondents with low caffeine intake experienced mild sleep disturbances, totaling 56 respondents (80%). Meanwhile, respondents with moderate and high caffeine intake mostly experienced moderated sleep disturbances, with 13 respondents (61.9%) and 9 respondents (52.9%), respectively. The results showed a significant correlation between caffeine intake and sleep disturbances (p-value=0.000). In all categories of caffeine intake, most respondents had normal nutritional status. However, no significant relationship was found between caffeine intake and nutritional status (p-value=0.351). In conclusion, caffeine intake was associated with sleep disturbances but not with nutritional status among final-year undergraduate students.

This study aims to analyze the relationship between caffeine consumption and sleep duration on VO₂Max levels among soccer school (SSB) students in Surabaya. VO₂Max is a key indicator of cardiorespiratory fitness and athletic performance. This research employed a quantitative cross-sectional design with an analytical observational approach. A total of 162 SSB students were included as research participants from several soccer schools in Surabaya. Data were collected using the Food Frequency Questionnaire (FFQ) to assess caffeine intake and the Pittsburgh Sleep Quality Index (PSQI) to evaluate sleep duration, and were analyzed using the Chi-Square test. The results revealed a significant relationship between caffeine consumption and sleep duration with VO₂Max (p<0.001). Students with higher caffeine consumption (≥3.5) and adequate sleep duration (≥7 hours) tended to have better VO₂Max values compared to those with lower caffeine intake and insufficient sleep. These findings indicate that appropriate caffeine consumption and adequate sleep duration play an important role in improving cardiorespiratory fitness. Therefore, proper education on healthy lifestyle habits is essential to optimize the performance of young athletes.

The café industry has become increasingly competitive, including in the Arcamanik District of Bandung City. This study seeks to investigate the extent to which marketing intelligence capabilities influence the competitiveness of café MSMEs in the region. A descriptive and verificative research approach was employed, utilizing linear regression analysis with the assistance of SPSS version 20 software. The study population consisted of 43 café MSME entrepreneurs, selected through a saturated sampling technique, thereby including all members of the population. Data were collected through field studies—comprising questionnaires, interviews, and direct observations—as well as literature reviews to strengthenthe theoretical framework. The results demonstrate that marketing intelligence capabilities have a significant effect on competitiveness. This finding highlights the critical role of marketing intelligence in enabling café MSMEs to sustain their operations and enhance their competitive advantage. Strengthening marketing intelligence can serve as an effective strategic approach for café MSMEs to ensure business sustainability and improve competitiveness. The study suggests that future research may incorporate moderating variables such as digitalization or service quality to further explore the dynamics between marketing intelligence and competitiveness.

The café industry has become increasingly competitive, including in the Arcamanik District of Bandung City. This study seeks to investigate the extent to which marketing intelligence capabilities influence the competitiveness of café MSMEs in the region. A descriptive and verificative research approach was employed, utilizing linear regression analysis with the assistance of SPSS version 20 software. The study population consisted of 43 café MSME entrepreneurs, selected through a saturated sampling technique, thereby including all members of the population. Data were collected through field studies—comprising questionnaires, interviews, and direct observations—as well as literature reviews to strengthenthe theoretical framework. The results demonstrate that marketing intelligence capabilities have a significant effect on competitiveness. This finding highlights the critical role of marketing intelligence in enabling café MSMEs to sustain their operations and enhance their competitive advantage. Strengthening marketing intelligence can serve as an effective strategic approach for café MSMEs to ensure business sustainability and improve competitiveness. The study suggests that future research may incorporate moderating variables such as digitalization or service quality to further explore the dynamics between marketing intelligence and competitiveness.

Tingkat kefokusan merupakan faktor penting dalam produktivitas yang dipengaruhi oleh berbagai variabel seperti durasi tidur, konsumsi kafein, dan kondisi lingkungan kerja. Decision Tree Regressor memiliki potensi untuk memprediksi tingkat kefokusan, namun performanya sangat bergantung pada konfigurasi hyperparameter yang optimal. Penelitian ini bertujuan untuk membandingkan efektivitas algoritma Harmony Search (HS) dan Gravitational Search Algorithm (GSA) dalam mengoptimalkan hyperparameter Decision Tree Regressor untuk prediksi tingkat kefokusan. Metode penelitian menggunakan Machine Learning Life-Cycle dengan dataset FocusSense yang terdiri dari 10.000 sampel dari platform Kaggle. Proses optimasi dilakukan terhadap empat hyperparameter yaitu max_depth, min_samples_split, min_samples_leaf, dan max_leaf_nodes. Model dievaluasi menggunakan tujuh metrik evaluasi meliputi MSE, MAE, R², MAPE, Max Error, MSLE, dan EVS. Hasil penelitian menunjukkan bahwa model Decision Tree Regressor yang dioptimasi dengan Harmony Search menghasilkan performa terbaik dengan nilai MSE sebesar 14,626492 (penurunan 28,00% dari baseline), R² sebesar 0,873901 (peningkatan 5,94% dari baseline), dan MSLE sebesar 0,006663 (penurunan 26,13% dari baseline). Sementara itu, model yang dioptimasi dengan GSA menghasilkan MSE sebesar 16,134090 dan R² sebesar 0,860903, yang masih lebih baik dari baseline namun di bawah performa HS. Kesimpulan penelitian ini membuktikan bahwa algoritma Harmony Search lebih efektif dibandingkan Gravitational Search Algorithm dalam mengoptimalkan hyperparameter Decision Tree Regressor untuk prediksi tingkat kefokusan, dengan peningkatan akurasi prediksi yang signifikan pada data kontinyu.

The phenomenon of increasing female activity in cafes shows a shift in lifestyle that is not merely consumptive, but also reflective and social. Cafes have now become leisure spaces where women express themselves, build relationships, and find emotional balance. This study aims to examine the trend of women utilizing cafes as a practice of social welfare in the era of sustainability. The approach used is descriptive qualitative based on secondary sources, with data in the form of news articles, lifestyle writings, and online media coverage of women's leisure behavior in Cirebon. This analysis was conducted to explore the social and spiritual values that emerge in these activities. The results of the study show that cafes serve as safe spaces for women to interact, share ideas, and restore mental energy. These activities reflect maqashid values such as Hifz al-nafs (preserving the soul) and Hifz al-'aql (preserving the mind), while contributing to the spirit of sustainability through the strengthening of gender equality and social welfare. The novelty of this research lies in its attempt to interpret women's leisure trends through the paradigm of social welfare, rather than simply as a modern lifestyle. These findings have important implications for the creation of a more inclusive, safe, and sustainable public space, while also opening up a new perspective that leisure activities can be part of achieving maqashid al-syari'ah in contemporary social life.

Intuisi Coffee, sebuah kafe di Blang Kolak, Aceh Tengah, masih mengelola proses pemesanan dan transaksi secara manual, yang berdampak pada kurangnya efisiensi dalam pencatatan, pengelolaan stok, dan penyusunan laporan. Penelitian ini bertujuan untuk mengimplementasikan sistem informasi berbasis web guna meningkatkan efisiensi operasional kafe. Pengembangan sistem dilakukan menggunakan metode Waterfall dengan memanfaatkan XAMPP, PHP, dan MySQL sebagai teknologi utama. Evaluasi sistem menggunakan System Usability Scale (SUS) untuk mengukur tingkat kegunaan dari sisi efektivitas, efisiensi, dan kepuasan pengguna. Hasil evaluasi menunjukkan skor SUS sebesar 64,9, yang mengindikasikan sistem berada pada kategori kegunaan yang cukup baik. Implementasi sistem ini terbukti dapat mempercepat proses transaksi, mempermudah pengelolaan data, dan mendukung pengambilan keputusan secara lebih terstruktur

Excessive consumption of salt and caffeine during pregnancy can lead to complications such as hypertension, preeclampsia, impaired fetal development, and miscarriage. However, awareness among pregnant women regarding these risks remains low, particularly in regions with limited health literacy such as Batubara Regency. This community service project aimed to enhance pregnant women's understanding of safe salt and caffeine intake through a community-based educational approach at Posyandu Tenggiri. The methods included interactive counseling, group discussions, and pre- and post-test evaluations. The results showed a significant increase in participants’ knowledge, from a pre-test average score of 48.87 to 74.20 in the post-test. Additionally, the activity sparked the emergence of a local change agent and greater family involvement in dietary decisions during pregnancy. This program demonstrated that simple and participatory education can foster social transformation and healthier consumption behavior.

Customer satisfaction is a key factor in business success and sustainability, especially in the competitive café industry such as in Bogor. Xyz Coffee Cafe, with its unique nature concept and guaranteed coffee product quality, strives to understand and meet consumer expectations in order to maintain its position in the market.The aim of this study is to analyse consumer satisfaction at Xyz Coffee Cafe using the Importance-Performance Analysis (IPA) method.This study uses a qualitative descriptive approach with quantitative analysis. Data was collected through questionnaires to 54 respondents who had visited Xyz B Coffee Cafe. The results of the analysis show that the cafe has a good performance in maintaining consumer interests in most attributes, with strategic recommendations to improve certain aspects to maintain and increase customer satisfaction.

Indonesia, which is located on the equator, has great potential to utilize solar energy, with an average solar radiation reaching 4.80 kWh/m² per day. This provides an advantage in the development of Solar Power Plants (SPP), one of which is through the installation of rooftop on the roof of the building as a source of electrical energy. This study aims to analyze the feasibility of SPP development by considering the techno-economic aspects of the Pondok Juice cafe. The total real electrical energy consumption required by the Pondok Juice cafe is 32,548 Wh/day. Assuming a system loss of 15%, the total electrical energy requirement that must be supplied by the SPP is 37,430.2 Wh/day. The initial investment projection is IDR 204,265,197, with operational and maintenance costs for 25 years of IDR 105,760,028. The investment feasibility analysis shows NPV of IDR 441,523,820.10, BCR 4.11, DPP ±5 years, and IRR 15.55%, which proves that this SPP planning is feasible to implement.

This research focuses on Kafe Lacosta in Kota Metro, examining its business strategy implementation using the Blue Ocean Strategy approach to navigate the increasingly competitive market landscape. The study aims to explore and evaluate how Kafe Lacosta applies the Blue Ocean Strategy framework to tackle the competition it faces. As competition in the café sector intensifies, business owners are required to adopt innovative strategies to sustain and grow their enterprises. This research adopts a descriptive qualitative method, utilizing data collection techniques such as observation, interviews, and documentation. The analysis is conducted through tools like the Four Actions Framework, the Eliminate-Reduce-Raise-Create (ERRC) grid, the Strategy Canvas, and the Blue Ocean Idea Index. The results indicate that Lacosta MSME has initiated the Blue Ocean Strategy, particularly through product innovation, service enhancement, and promotional activities. Nonetheless, pricing remains a challenge that needs further attention. In general, applying the Blue Ocean Strategy has enabled Lacosta to develop distinctive value propositions to address market competition, especially by offering affordable value to its customers.  

Penelitian ini bertujuan untuk mengkaji penerapan konsep arsitektur berkelanjutan dalam upaya meningkatkan kenyamanan pengguna pada bangunan Tanatap Coffee di Bekasi. Dalam perkembangan arsitektur modern, keberlanjutan telah menjadi fokus penting untuk mengurangi dampak negatif lingkungan, sekaligus menciptakan ruang yang efisien dan nyaman bagi penggunanya. Kajian ini dilakukan melalui pendekatan kualitatif-deskriptif, melibatkan observasi langsung pada elemen-elemen arsitektur yang diterapkan, seperti pemanfaatan energi alami, material ramah lingkungan, dan efisiensi tata ruang. Hasil penelitian menunjukkan bahwa Tanatap Coffee telah memanfaatkan beberapa prinsip arsitektur berkelanjutan, seperti ventilasi silang, pencahayaan alami, dan pemilihan vegetasi yang mendukung kenyamanan termal. Selain itu, pemanfaatan material daur ulang serta desain terbuka pada fasad bangunan turut mendukung pengalaman ruang yang nyaman bagi pengguna.

Purpose: With time, competition in business is getting fiercer. Failure and loss have become common risks. By studying business feasibility, one aspect of which is marketing, losses can be minimized. This title was chosen because it is important for business people to develop a marketing strategy that is suitable for the intended market so that business sustainability is maintained. Marketing is crucial in business, because without effective marketing, potential customers will not know about our business, so they cannot become our customers. This research aims to study general consumer preferences and relevant marketing strategies. Methods: Using a descriptive qualitative method the author conducted in-depth interviews with open-ended questions, conducted with 10 respondents. Implication: A cozy atmosphere, innovative menu, and competitive prices are the main elements that consumers look for in a cafe. Marketing strategies through social media with creative content and attractive promotions will be very effective to increase the appeal of iTangi.

This study aims to determine the impact of possessing the components of strategic cognitive competencein enhancing the quality of health services in the private health sector operating in the holy KarbalaGovernorate through a sample that was studied, which included three important private hospitals, namely(Al-Kafeel Hospital, Al-Hujjah Hospital, and Zain Al-Abidin Hospital). To achieve this goal, threedimensions were adopted for the main independent variable, strategic cognitive competence, which are(information technology, decision-making, creative thinking). Five dimensions were also adopted for thedependent variable, the quality of health services, which are (tangibility, reliability, responsiveness,assurance, empathy), based on ready-made scales. A sample of leaders, administrators, and doctorsworking in these hospitals, amounting to (120) respondents, was selected for the purpose of answering thequestions related to the independent variable, strategic cognitive competence. As for the questions relatedto the dependent variable, the quality of health services, they were answered by a sample of clients ofthese hospitals, amounting to (120) respondents, in order to ensure the credibility of the answers. Anumber of statistical programs were used, such as (SPSS V.25, AMOS V.23). One of the most importantconclusions reached by the study is that the material aspects of health services, such as medical devicesand equipment, are considered good, but they need continuous improvement to keep pace with everythingnew in this field. The study concluded with a number of recommendations, the most important of whichwas the need to work on developing an integrated system to measure and analyze the level of patientsatisfaction with the nature of the health services provided.

This study shows that team collaboration dynamics greatly affect work quality and goal achievement. These dynamics include various elements, including communication, coordination, interdependence, and trust among team members. The methodology of this study aims to provide detailed insights into team collaboration dynamics and work efficiency, with a focus on organizational success in achieving organizational goals. The interpersonal communication patterns of managers that were found and had a significant impact on Caffe Otsukohi team performance were democratic communication patterns and laissez-faire communication patterns. Supporting factors for interpersonal communication between managers and Caffe Otsukohi employees include transformational leadership, a positive work environment, effective communication channels, and shared goals.

This research aims to determine the effect of live music and café atmosphere on customer satisfaction at Legi Pait Food & Coffee Surakarta. This research uses quantitative research methods. The population in this research were customers of Legi Pait Food and Coffee Surakarta and the samples in this research was 67 respondents using simple random sampling. The variables usen in this research are Live Music, Café Atmosphere and Customer Satisfaction. The data used in this research is primary data. The data collection method used was a questionnaire in the form of a Google Form. The result of this research show that live music has a positive and significant effect on customer atisfaction, café atmosphere has a positive and significant effect on customer satisfaction and live music and café atmosphere simultaneously have a positive and significant effect on customer satisfaction.    

This research aims to (1) determine sharia marketing strategies in increasing consumer buying interest carried out by Safira cafe owners in the reviewing village of Mare Sebo Ulu sub-district, Batang Hari district. (2) To find out the obstacles faced in efforts to increase consumer buying interest at Safira Cafe. This research uses descriptive qualitative methods. The data collection technique in this research uses observation, interview and documentation techniques. The theory used in this research is the theory put forward by Abuznaid formulating the definition of sharia marketing, namely, wise decisions in order to satisfy customer needs through good behavior, providing healthy products or services (halalan thoyyibah) with the approval of both parties (seller and buyer). ) in order to achieve material and spiritual prosperity, this world and the hereafter through an ethical world. Apart from that, the theory used by Kotler, marketing is a way in which companies involve consumers, build good relationships with consumers and create value for consumers, so as to get good value or response from consumers in increasing profits and consumer feedback. The 4P marketing strategy used is, product, price, place and promotion. The results of this research show that, the marketing strategy carried out by Safira Cafe to increase revenue is with product strategies starting from improving the quality of the products presented, product health, product cleanliness and product halal. Pricing strategy, Safira Cafe has set affordable, relatively cheap prices. The prices offered by Safira Cafe are affordable and cheap in accordance with the economy of the community in the review village and are suitable for all teenagers and adults. Place strategy, safira cafe prioritizing the cleanliness of the place and consumer comfort while at the Safira Cafe. Promotional strategy, Safira Cafe does not promote via social media, only promotes by word of mouth, but quite a few people already know about the existence of Safira Cafe. Meanwhile, the income earned by Safira Cafe is still relative or fluctuating, namely depending on the number of visitors.

Gastritis is inflammation in the stomach due to an unhealthy lifestyle. If not treated immediately, it can cause damage to cells in the digestive system and if it lasts for a long time, it can cause stomach cancer. The aim of this research is to determine the relationship between caffeine consumption behavior, anxiety levels and smoking behavior with the incidence of gastritis at Mulia Karya Husada Health Vocational School in 2023. Quantitative research method with a cross sectional approach. The sampling technique used was Total Sampling with a sample size of 123 respondents, data collection using a questionnaire distributed using Google Form. The statistical test used in this research is the Chi Square test. Based on the results of the Chi Square test, it shows that the significance value between caffeine consumption behavior and gastritis (p-value = 0.003), the significance value between the level of anxiety and gastritis (p-value = 0.001) and the significance value between smoking behavior and gastritis (p-value = 0.025). In conclusion, there is a relationship between caffeine consumption behavior, anxiety levels and smoking behavior and the incidence of gastritis at Mulia Karya Husada Health Vocational School in 2023. The incidence of gastritis at Mulia Karya Husada Health Vocational School is relatively high, which is caused by caffeine consumption behavior, anxiety levels, and smoking behavior. So it is important to create programs such as a healthy canteen, game based learning and education about the dangers of smoking and supervision carried out by Mulia Karya Husada Health Vocational School to reduce the incidence of gastritis in students    

Abstract. The increase in the number of Coffee Shops has created intense competition between them, especially along with the development of technology and the application of digital marketing. The importance of digital marketing, especially through social media, is the main focus in efforts to increase brand awareness of a product or service. In this context, digital marketing, especially through social media marketing, is described as an effective tool for achieving marketing goals by creating customer contacts, generating interest, and increasing purchase intentions. Analysis of brand awareness stages, from unconscious brands to top of mind, is an important part of understanding the process of forming a brand's image. Focus is also given to Instagram's role as an effective platform in enhancing brand identity, with an explanation of Instagram's popularity in promoting products and services. In this context, research focuses on the digital marketing communication strategy used by Dom Social Hub, a Coffee Shop in Tangerang City. The research aims to explore the advantages, disadvantages and obstacles that arise during the implementation of this strategy, with a focus on increasing brand awareness on social media platforms, especially Instagram. The object of this research explains the digital marketing strategy of the Dom Social Hub cafe in increasing brand awareness on Instagram social media. This research uses the constructivism paradigm. This research approach uses a qualitative descriptive approach.

Penelitian ini bertujuan untuk mengetahui pengaruh perilaku kewirausahaan dan modal usaha terhadap keberhasilan usaha di Kecamatan Telanaipura Kota Jambi. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif dengan analisis data dengan metode uji koefisien determinasi. Sampel pada penelitian ini sebanyak 30 responden pemilik usaha warung kopi/kafe di Kecamatan Telanaipura Kota Jambi. Hasil penelitian menunjukkan  bahwa secara parsial perilaku kewirausahaan berpengaruh positif dan signifikaan terhadap keberhasilan usaha dan modal usaha tidak berpengaruh positif dan signifikan terhadap keberhasilan usaha. Secara simultan menunjukkan bahwa perilaku kewirausahaan dan modal usaha secara bersama-sama berpengaruh signifikan terhadap keberhasilan usaha di Kecamatan Telanaipura Kota Jambi. Hasil perhitungan koefisien determinasi menunjukkan bahwa variabel perilaku kewirausahaan sebesar 37.5% dan sisanya 62.5% dipengaruhi oleh variabel lain diluar penelitian ini.